Interesting special cases are the isosceles triangle, theĮquilateral triangle and the right-angled triangle.įor further information, move the mouse above the words below and the corresponding line will be marked on the triangle. Interesting lines are the perpendicular bisectors, the angle bisectors, the median lines What interesting lines exist on triangles? The following formulae hold:įurthermore, for three sides a,b,c and angle alpha opposing of a: The sides and angles can be calculated by using sine and cosine. Calculator Applications, and Mathematics. The area can be calculated as (side*height)/2 for any side and the corresponding height. Typical geometric figures would be circles, squares, triangles (isosceles, equilateral. What calculations can be done in a triangle? triangle, equilateral triangles have maximum area. The height is the distance beween one side and the opposing corner. what is its area mean Equilateral Triangle Calculator - Shows All Steps Isosceles Triangle Calculator. But for example, if you got two sides and the height on one side, there is more than one possible triangle with those lengths. The area of an equilateral triangle is 3 4 a 2. The semi perimeter of an equilateral triangle is 3 a 2. The perimeter of an equilateral triangle is 3 a. A triangle is equiangular if and only if it is equilateral. It is also determined by two angles and one side, ord by two sides and the angle between those sides.Ī triangle can also be determined by three other values. An equilateral triangle has the same pattern on all 3 sides, an isosceles triangle has the same pattern on just 2 sides, and a scalene triangle has different patterns on all sides since no sides are equal. An equilateral triangle is a triangle with all three of its internal angles congruent and equal to 60 °. The sum of all interior angles of a triangle is always 180 degrees.īy what information is a triangle uniquely determined?Ī triangle is always determined by its three side lengths. the angle between the sides ending at that corner. In every corner, there is an interior angle, i.e. The following formulas are right in equations:Ī triangle has three sides and three corners.
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